Window-sash hinge



April 7, 1931.

WINDOW SASH HINGE Filed Sept. 9, 1.926

A. MITCHELL ET AL 5 Sheets-Sheet l Apxril 7, 1931" l A. MBTQHELL ET AL WINDOW SASH HINGE Filed Sept. 9, 1926 5 Sheets-Sheet 2 April '7 1931. A. MITCHELL ETAL WINDOW SASH HINGE 4 S'Sheets-Sheet 3 Filed Sept. 9, 1926 Patented vApr. 7, 1931 ALFRED MITCHELL AND JOHN WILLIAM SMITH, OF BRADFORD, ENGLAND WINDOW-SASH HINGE Application filed September 9, 1926, Serial No. 134,448, and in Great Britain May 7, 1926.

. This invention relates to windows and window sashes and frames.

One of the. objects of the invention is to dispense with cords, weights, and pulleys. Another object is to facilitate the operation of cleaning and to enable this to be efiected from the interior of the apartment. Another object is to provide a window from which the sash or sashes may be completely 1o removed While the opening and ventilation may be kept under control. Another object is to provide a window from which the sashes may be removed leaving the frame unob- .structed-by any cross-members so as to en- 5 able work such as painting on the outside of the frame to be done from within the apartment. Another object is to provide means to enablethe sashes to be secured in predeterminedpart opened positions or to be completely removed and replaced in a convenient manner. Other objects will be apparent from the following description.

The sash of a window having a'removable sash or sashes is provided with a pairof piv- 'oting members each having a convex quadrant face and the frame is provided with supporting members each having a concave quadrant face adapted to coact with the quadrant face on'the pivoting member. In so one form of the invention the pivoting member is also provided with a slot which is radial of the convex quadrant face on the pivoting member. In one form of the invent-ion'the pivoting member is al'so'provided with a slot which is radial of the convex quadrant face and passes through its centre of curvature, preferablyterminating near centre. With this slot registers a pin mounted at the centre of curvature of the 10 concave quadrant face on the supporting member.

Means are suitably provided to prevent the sash from moving inwards at the pivot when in the vertical position. Preferably these means comprise a stop mounted on the lower part of the supporting member. The stop preferably consists of a small upstanding plate member or the lower end of the concave quadrant face. r

The sash is adapted to be held in a horizontal position by the coaction of the lower end of the pivoting member with a projection on the upper end of the supporting member. Preferably the lower end of the pivoting member is recessed or slotted to engage this projection and prevent the sash being removed when in the horizontal position.

According to 'a further feature of the invention the under ends of the pivoting memher and supporting member are sloped upwardly from the outside to the inside of the window and further are stepped.

This feature is of especial value when the window is arranged so that the sashes are placed vertically one above the other. In this form of window, to which the present invention is especially applicable, the upper stile of one sash contacts with the lower stile of the sash immediately above. To make the joint weather proof the lower stile is cut 7 so as to slope upwardly and inwardly and is stepped to prevent water creeping inwards. The upper stile is out to conform and the pivoting members secured to the sash and the supporting members secured to the frame are cut to conform with the upper stile of the sash below.

The invention will be more readily understood by the following description of a preferred form, illustrated by the accompanying drawings in which Figure 1 represents in elevation the inner side of a pair of window sashes and window frames with the invention applied thereto.

' Figure 2 is asection on the line A B of Fig. 1 showing the hinged headings, which will be described hereinafter in the open position.

Figure 3 is a vertical section of the window 90 shown in Fig. 1 with the upper sash partly open.

Figure 4 is a vertical section of the window shown in Fig. 1 with both sashes fully open.

Figure 5 is a front elevation and Fig. 6 a side elevation of one of the supporting members mounted on the frame.

F ig. 7 is a front elevation and Fig. 8 a side elevation of one of the pivoting members mounted on the sashes.

Figure 9 is a view of a drop catch used for securing the sash at any convenient angle.

Figure 10 is a sectional side elevation showing window fitting according to another feature of my invention. The sash is in the vertical-or closed position.

Figure 11 shows a sectional side elevation corresponding to Figure 10 of the sashin the horizontal or wide open position.

Figure 12 shows a side elevation of the supporting device fitted to the frame.

Figure 13 is a left hand'view of Fig. 12.

Figure 14 is an elevation of the pivoting member which is to be secured to the sash.

Figure 15 is a plan view of Fig. 18.

Figure 16 is a right hand view of Fig. 14.

Figure 17 is an elevation partly in section showing the retaining arm secured to" the framefor securing the sash in partly'open-pos'itions.

Figure 18 is an elevation from the inside of the window showing the securing device on the retaining arm.

Figure 19'is an elevation of the retaining arm in the position in which it is left when the sash is removed.

Figure 20 is a right hand elevation of Fig. 19.

Figure 21 is an elevation of the guide and locking member mounted on-the sash to cooperate with the retaining arm.

Figure 22 is a right hand elevation of Fig. 21.

Referring now to Figs. 1-9 of the draw- 1ngs:

Each window sash 2 is pivotally mounted at 3 at or near the bottom rail to the window frame by means of apin- 4 in the frame on gaging an open slot 5 in the sash, the headings 6 round the inside of the frame instead of being xed as heretofore are hinged at 7 so as to be capable of turning aside when it is required to inwardly turn or tilt one or other of the sashes or remove same from the frame. The headings Get for the top sash are made broader or deeper so as to contact with the inside face of the top sash and they are divided and made separate from the headings 6?) of the bottom sash. The headings a round the outside of the frame isof uniform width or depth and is fixed to the frame as heretofore. The intermediate headings are cut away in the upper half of the frame and in the lower half extend to the lower rail of the upper sash forming an external beading for the lower sash. This beading is widened to form a facing extending to the external beading 60. At or near the top of each facing and also at or near the bottom of the frame at each side of same we provide metal castings or brackets 10 as shown more fully in Figures 9 and 10, which may be made of aluminium, brass or other metal recessed in the said facings and in the outer sides of the sashes castings or pivoting brackets 12 are provided having open slots 5 adapted to engage pins 4 on the cast-ings or supporting brackets 10.

Then a sash is tilted out of the frame e. g. in the horizontal position by pivoting about the pin 4 as centreit' maybe removed from the frame by pulling it straight out so that the slot 5 slides over the pin 4:. The brackets 10 are each provided with a laterally projecting lug 14 adapted to engage with an outwardly projecting ing 15 on each of the brackets 12 each lug15 being provided with a notch or recess 16 toeng'age with the said lug 1 1 in order to prevent the window in a horizontal position from'falling or beingpulled out. The castin'gsor brackets on the frame are recessed out to'form a concave quadrant face 17' of which thepin't is the approximate centre of curvature. This concave quadrant face coacts with acorresponding convex quadrant face 18" in the castings or brackets on the sashes.

The top sash is preferably held in a tilting position by means ofa sneck or drop catch 19'only'shown in Figure 9 secured to the frontface of each stile of the top sash which sneck or drop catch may be turned round from one horizontal position to another and is adapted to engage a metal cased recess not shown in the inner face of theboard beading or in the side of the frame when the catch is turned, the opposite end of the sneck or drop catch is bevelled off at 20 in order to'facilitat'e the turning back of the board headings. The said sneck is made also to act a locking device when turned in a more or less'upright position to retain the broad headings in their closed position. Instead of a sneck or drop catch we may use a hinged stud recessed in the inside face of the broad beading and adapted to'be turned into-a laterally projecting position.

The bottom sash may be held in any inwardly tilting position by similar means.

Three or more sashes may be employed in certain kinds of window frames each being arranged as heretofore mentioned.

Figures 10-16 illustrate a modification of the invention in which the pin and socket on the supporting and pivoting members respectively are dispensed with.

In the drawings 1 is the window frame and 2 is the sash. To the frame 1 is secured the supporting member 10 by means of the screws 21. This supporting member 10 has a concave quadrant face 22, an upstanding sash stop 23 and a lateral sash stop 14. The stop 14 has a downward projection 24.

The pivoting member shown in Figs. 14 and 16 is secured to the lower ends of the sides of the sash 2, the wood being cut to the necessary shape. This pivoting member is provided with a convex quadrant face 18 and a slot 25. Referring to Fig. 10, the sash is shown in the vertical position; the convex quadrant face 18 bears against the concave quadrant face 17 and the sash is secured from lateral displacement by being positioned behind the upstanding stop 23. It can be pivoted, however, about the top of the stop 23 as axis into the position shown in Fig. 11 in which the sash is secured in the horizontal position by the slot 25 engaging the downward projection 24 of the stop 14. The sash is also supported by the stop 23 bearing against the side of the pivoting member and by the lower end of the convex quadrant face 18 hearing against the upper end of the concave quadrant face 17.

To remove the sash it is tilted upwards a little until the slot 25 disengages the stop 24. It may then be withdrawn from the frame. The under ends of the pivoting member and supporting member 10 are cut to slope downwardly and outwardly of the window with a stepped portion to prevent the entry of draughts or rain.

Two pivoting members are secured to the sash, one at the lower end of each side and two supporting members are secured to the frame, one to co-operate with each of the pivoting members. I

The lower sides of the sashes are cut to conform with the stepped design of the fit tings above described. Where the sashes are fitted in the frames vertically above each other in one plane the upper sides are cut correspondingly. The sashes may, however, be laterally displaced above each other as when pulleys, cords and weights are employed. But the present invention dispenses with the necessity of using any pulleys, cords or weights.

Figs. 1722 illustrate one manner in which the sash may be held in the partly open position. The plate 26 is secured to the'frame 1. On this plate is secured an arm 27 pivoted'at 28 and a gravity catch 29 pivoted at 30. The arm 27 hasa number 'of slots 31 out on its under side and a gravity stop 32 pivoted at 33. i

The arm 27 works normally in a guide 34 mounted on the sash 2.

The arm 27 is held at an angle not far removed from the horizontal by the gravity catch 29, when the sash is removed or in the horizontal position. 1

The sash is channelled or cut away as shown by the inclined dotted lines in Fig. 17 where the guide 34 is secured to it. On lifting the sash the lower end of the gravity stop 32 is struck by the edge of the aforesaid channel in the sash and the stop 32 is thus aligned with the arm 27 which it leads into the guide 34. The gravity stop 34 swings vertical again on leaving the guide and prevents the sash being removed from the arm until the stop is aligned by hand.

The slots 31 in the underside of the arm 27 can engage the bottom of the guide 34 to hold the sash open at selected angles. A projection 35 holds the arm against lateral displacement. As the sash is closed the arm 27 is lifted until the sash is finally horizontal. In this position the guide member 34 passes beyond the pivot 28 and a projection 36 presses back the gravity catch 35 allowing the arm 27 to fall into a vertical position.

A securing device is provided, consisting of a plate 37 hinged at 38. This can be pressed or can be so weighted as normally to hang so that the projection 39 overlies the arm 27 when the slots in this'arm engage the guide member 34. This prevents the arm lifting and therefore prevents the sash being moved until the locking device is removed.

When the sash is closed, the projection 39 passes behind the arm 27 in the neighborhood of the pivot 28'and locks the sash against opening.

' The invention has been described in its preferred form with reference to metal fittings secured to wooden frames and sashes.

The pivoting members and other fittings may be made of iron, brass or aluminum or any other suitable material. The invention is equally applicable to metal framed windows in which case some of the fittings may if des'ired be made integral with the sashes or frames or with both.

We declarethat what we claim is 1. A window having a frame and a removable sash adapted to pivot about a horizontal axis, pivoting members on said sash each havlnga convex quadrant face and supporting members on said frame each having a concave quadrant face adapted to coact with the quadrant face on the pivoting member and in which said concave quadrant face terminates at its lower end in a vertical upstanding wall for the purpose of maintaining the sash in a vertical position and on which said sash can pivot.

2. A window having a frame and a removable sash adapted to pivot about a horizontal axis, pivoting members on said sash each having a convex quadrant face and support ing members on said frame each having a concave quadrant face adapted to coact with the quadrant face on the pivoting member the said supporting member being provided with a vertical projection to contact with the said pivoting member to hold the sash in the vertical position and a horizontal projection to contact with a recess in said pivoting member to hold the sash in the horizontal position.

3. In a window having a sash pivoting about horizontal axis, a supporting member adapted to be secured to the side stile of the frame and having a concave quadrant face terminating in an upstanding projection.

4. A window having a frame, a removable sash adapted to pivot about a horizontal axis, pivoting members on the lower corners of said sash each having a convex quadrant face and supporting members on said frame each having a concave quadrant fact adapted to coact with the quadrant face on the pivoting member.

5. A window having a frame, a removable sash adapted to pivot about a horizontal axis, pivoting members on the lower corners of said sash each having a slot and a convex quadrant face and supporting members on the said frame each having a pin adapted to register with said slot and a concave quadrant face adapted to coact with said convex quadrant face on said pivoting member.

6; A window having a frame, a removable s; adapted to pivot about a horizontal axis, pivoting members on the lower corners of said sash each having a convex quadrant face and supporting members on said frame each having a. concave quadrant face adapted to coact with the quadrant face on the pivoting member a projection being secured to each supporting member contacting with the inner side of the pivoting member to maintain the sash in the vertical position.

7. A window having a frame, a removable sash adapted to pivot about a horizontal axis, pivoting members on the lower corners of said sash having a convex quadrant face and supporting members on said frame each having a concave quadrant face adapted to coact with the quadrant face on the pivoting member a projection being provided on the upper part of each supporting member adapted to coact with a portion of. the correspond ing pivoting member to hold the sash in the horizontal. position.

8. A window having a frame, a removable sash adapted to pivot about a horizontal axis, pivotin members on the lowercorners of said sash having a slot and a convex quadrant face and supporting members on said frame each havin a pin adapted to register with said slot and a concave quadrant face adapted to react with said convex quadrant face on said pivoting member a projection being provided on the upper part of each supporting member adapted to coact with portion of the corresponding pivoting member to hold the sash in the horizontal position.

9; A window having a frame, removable sashes in substantially the same plane adapted to pivot about horizontal axes, a pair of pivoting members on the lower corners of each sash each having a slot and a convex quadrant face and pairs of supporting members on said frame each having a pin adapted toregister with said slot and a concave quadrant face adapted tocoact with said convex quadrant face on said pivoting member.

10. A window having a frame, a removable sash adapted to pivot about a horizontal axis, pivoting members on the lower corners of said sash each having a convex quadrant face and supporting members on said frame each having a concave quadrant face adapted to coact with the quadrant face on the pivoting member and in which the under ends of the pivoting and supporting members and the lower stile are sloped upwardly from the outside to the inside of the window to exclude moisture.

11. A sash supporting member adapted to be secured to the inner face of the side of a window frame having a concave quadrant face terminating in an upstanding projection.

12. A'window having a frame, a removable sash adapted to pivot about a horizontal axis, pivoting members on the lower corners of said sash each having a slot and a convex quadrant face and supporting members on the said frame each having a pin adapted to register with said slot and a concave quadrant face adapted to coact with said convex quadrant face on said pivoting member, a projection being provided on the upper part of each supporting member adapted to coact with a portion of the corresponding pivoting member to hold the sash in the horizontal position.

13'. A window having a frame, a removable sash adapted to pivot about a horizontal axis, pivoting members on the lower corners of said sash having a slot and a convex quadrant face and supporting members on said frame each having a pin adapted to register with said slot and a concave quadrant face adapted to coact with said convex quadrant face on said pivoting member a projection being provided on the upper part of each supporting member adapted to coact with a portion of the corresponding pivoting member to hold the sash in the horizontal positionand a further projection being provided on the upper part of each supporting member adapted to coact with a portion of the corresponding member to hold the sash in the horizontal position.

14. A window having a frame, removable sashes in substantially the same plane adapted to pivot about horizontal axes, a pair of pivoting members 011 the lower corners of each sash each having aslot and a convex quadrant face and pairs of supporting members on said frame each having a pin adapted to register with said slot and a concave quadrant face adapted to coact with said convex quadrant face on said pivoting member, a projection being provided on the upper part of each supporting member ada ted to coaet with a portion of the correspon ing pivoting member to hold the sash in the horizontal position.

15. A sash supporting member adapted to be secured to the inner face of the side of a window frame having a concave quadrant face, a pin mounted substantially at the centre of curvature thereof, and a projection it the upper end of said concave quadrant ace.

In witness whereof, we have hereunto signed our names this 31st day of August,

ALFRED MITGI-IELL. JOHN WILLIAM SMITH. 

